Diathermy is the therapeutic use of what to heat deep tissues?

Diathermy is the therapeutic use of what to heat deep tissues?

• A. High-Frequency Electromagnetic Waves
• B. Cryogenic Liquids
• C. Low-Frequency Sound Waves
• D. Mechanical Pressure

Answer: (A)

Diathermy heats deep tissues by using high-frequency electromagnetic energy. When this energy is applied, water molecules and ions in the tissues continuously attempt to align and move with the rapidly changing electric and magnetic fields. This molecular motion creates friction and resistive heating, turning the electromagnetic energy into heat that can reach deeper structures such as muscle and connective tissue. This deep heating distinguishes diathermy from modalities that cool (cryogenic liquids), rely on mechanical sound waves (ultrasound), or use pressure without heating.

Diathermy heats deep tissues by using high-frequency electromagnetic energy. When this energy is applied, water molecules and ions in the tissues continuously attempt to align and move with the rapidly changing electric and magnetic fields. This molecular motion creates friction and resistive heating, turning the electromagnetic energy into heat that can reach deeper structures such as muscle and connective tissue. This deep heating distinguishes diathermy from modalities that cool (cryogenic liquids), rely on mechanical sound waves (ultrasound), or use pressure without heating.